usb: musb: Stop bulk endpoint while queue is rotated

[pandora-kernel.git] / drivers / parisc / iommu-helpers.h

diff --git a/drivers/parisc/iommu-helpers.h b/drivers/parisc/iommu-helpers.h
index 0a1f99a..c6aa388 100644 (file)
--- a/drivers/parisc/iommu-helpers.h
+++ b/drivers/parisc/iommu-helpers.h
@@ -1,3 +1,5 @@
+#include <linux/prefetch.h>
+
 /**
  * iommu_fill_pdir - Insert coalesced scatter/gather chunks into the I/O Pdir.
  * @ioc: The I/O Controller.
@@ -95,12 +97,18 @@ iommu_fill_pdir(struct ioc *ioc, struct scatterlist *startsg, int nents,
 */
 
 static inline unsigned int
-iommu_coalesce_chunks(struct ioc *ioc, struct scatterlist *startsg, int nents,
-                     int (*iommu_alloc_range)(struct ioc *, size_t))
+iommu_coalesce_chunks(struct ioc *ioc, struct device *dev,
+               struct scatterlist *startsg, int nents,
+               int (*iommu_alloc_range)(struct ioc *, struct device *, size_t))
 {
        struct scatterlist *contig_sg;     /* contig chunk head */
        unsigned long dma_offset, dma_len; /* start/len of DMA stream */
        unsigned int n_mappings = 0;
+       unsigned int max_seg_size = min(dma_get_max_seg_size(dev),
+                                       (unsigned)DMA_CHUNK_SIZE);
+       unsigned int max_seg_boundary = dma_get_seg_boundary(dev) + 1;
+       if (max_seg_boundary)   /* check if the addition above didn't overflow */
+               max_seg_size = min(max_seg_size, max_seg_boundary);
 
        while (nents > 0) {
 
@@ -135,11 +143,11 @@ iommu_coalesce_chunks(struct ioc *ioc, struct scatterlist *startsg, int nents,
 
                        /*
                        ** First make sure current dma stream won't
-                       ** exceed DMA_CHUNK_SIZE if we coalesce the
+                       ** exceed max_seg_size if we coalesce the
                        ** next entry.
                        */   
-                       if(unlikely(ALIGN(dma_len + dma_offset + startsg->length,
-                                           IOVP_SIZE) > DMA_CHUNK_SIZE))
+                       if (unlikely(ALIGN(dma_len + dma_offset + startsg->length, IOVP_SIZE) >
+                                    max_seg_size))
                                break;
 
                        /*
@@ -161,7 +169,7 @@ iommu_coalesce_chunks(struct ioc *ioc, struct scatterlist *startsg, int nents,
                dma_len = ALIGN(dma_len + dma_offset, IOVP_SIZE);
                sg_dma_address(contig_sg) =
                        PIDE_FLAG 
-                       | (iommu_alloc_range(ioc, dma_len) << IOVP_SHIFT)
+                       | (iommu_alloc_range(ioc, dev, dma_len) << IOVP_SHIFT)
                        | dma_offset;
                n_mappings++;
        }